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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/extensions/api/messaging/native_process_launcher.h"
#include "base/command_line.h"
#include "base/eintr_wrapper.h"
#include "base/file_util.h"
#include "base/logging.h"
#include "base/process_util.h"
namespace extensions {
bool NativeProcessLauncher::LaunchNativeProcess(
const FilePath& path,
base::ProcessHandle* native_process_handle,
NativeMessageProcessHost::FileHandle* read_file,
NativeMessageProcessHost::FileHandle* write_file) const {
base::FileHandleMappingVector fd_map;
int read_pipe_fds[2] = {0};
if (HANDLE_EINTR(pipe(read_pipe_fds)) != 0) {
LOG(ERROR) << "Bad read pipe";
return false;
}
file_util::ScopedFD read_pipe_read_fd(&read_pipe_fds[0]);
file_util::ScopedFD read_pipe_write_fd(&read_pipe_fds[1]);
fd_map.push_back(std::make_pair(*read_pipe_write_fd, STDOUT_FILENO));
int write_pipe_fds[2] = {0};
if (HANDLE_EINTR(pipe(write_pipe_fds)) != 0) {
LOG(ERROR) << "Bad write pipe";
return false;
}
file_util::ScopedFD write_pipe_read_fd(&write_pipe_fds[0]);
file_util::ScopedFD write_pipe_write_fd(&write_pipe_fds[1]);
fd_map.push_back(std::make_pair(*write_pipe_read_fd, STDIN_FILENO));
CommandLine line(path);
base::LaunchOptions options;
options.fds_to_remap = &fd_map;
if (!base::LaunchProcess(line, options, native_process_handle)) {
LOG(ERROR) << "Error launching process";
return false;
}
// We will not be reading from the write pipe, nor writing from the read pipe.
write_pipe_read_fd.reset();
read_pipe_write_fd.reset();
*read_file = *read_pipe_read_fd.release();
*write_file = *write_pipe_write_fd.release();
return true;
}
} // namespace extensions
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